include/linux/of_pci.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef __OF_PCI_H
   3 #define __OF_PCI_H
   4
   5 #include <linux/pci.h>
   6 #include <linux/msi.h>
   7
   8 struct pci_dev;
   9 struct of_phandle_args;
  10 struct device_node;
  11
  12 #if IS_ENABLED(CONFIG_OF) && IS_ENABLED(CONFIG_PCI)
  13 struct device_node *of_pci_find_child_device(struct device_node *parent,
  14                                              unsigned int devfn);
  15 int of_pci_get_devfn(struct device_node *np);
  16 int of_irq_parse_and_map_pci(const struct pci_dev *dev, u8 slot, u8 pin);
  17 int of_pci_parse_bus_range(struct device_node *node, struct resource *res);
  18 int of_get_pci_domain_nr(struct device_node *node);
  19 int of_pci_get_max_link_speed(struct device_node *node);
  20 void of_pci_check_probe_only(void);
  21 int of_pci_map_rid(struct device_node *np, u32 rid,
  22                    const char *map_name, const char *map_mask_name,
  23                    struct device_node **target, u32 *id_out);
  24 #else
  25 static inline struct device_node *of_pci_find_child_device(struct device_node *parent,
  26                                              unsigned int devfn)
  27 {
  28         return NULL;
  29 }
  30
  31 static inline int of_pci_get_devfn(struct device_node *np)
  32 {
  33         return -EINVAL;
  34 }
  35
  36 static inline int
  37 of_irq_parse_and_map_pci(const struct pci_dev *dev, u8 slot, u8 pin)
  38 {
  39         return 0;
  40 }
  41
  42 static inline int
  43 of_pci_parse_bus_range(struct device_node *node, struct resource *res)
  44 {
  45         return -EINVAL;
  46 }
  47
  48 static inline int
  49 of_get_pci_domain_nr(struct device_node *node)
  50 {
  51         return -1;
  52 }
  53
  54 static inline int of_pci_map_rid(struct device_node *np, u32 rid,
  55                         const char *map_name, const char *map_mask_name,
  56                         struct device_node **target, u32 *id_out)
  57 {
  58         return -EINVAL;
  59 }
  60
  61 static inline int
  62 of_pci_get_max_link_speed(struct device_node *node)
  63 {
  64         return -EINVAL;
  65 }
  66
  67 static inline void of_pci_check_probe_only(void) { }
  68 #endif
  69
  70 #if defined(CONFIG_OF_ADDRESS)
  71 int of_pci_get_host_bridge_resources(struct device_node *dev,
  72                         unsigned char busno, unsigned char bus_max,
  73                         struct list_head *resources, resource_size_t *io_base);
  74 #else
  75 static inline int of_pci_get_host_bridge_resources(struct device_node *dev,
  76                         unsigned char busno, unsigned char bus_max,
  77                         struct list_head *resources, resource_size_t *io_base)
  78 {
  79         return -EINVAL;
  80 }
  81 #endif
  82
  83 #endif